Fuse or fusible resistor?

Used in the battery (-) lead of a handheld scope. Schematics unpublished.
Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
"1E7A".
Google returns slim results, none promising.
What type is this?
Thanks,
Dave
Reply to
DaveC
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In article , DaveC wrote:
USE COMPLETE SENTENCES!
Reply to
Salmon Egg
On 6/26/2010 9:56 PM Salmon Egg spake thus:
A grammar nanny, eh?
You must be a big hit at parties ...
Reply to
David Nebenzahl
Idiot ^^^^^ Not a complete sentence ^^^^^^^^^^^^^^^^^^^^^^^ Not a complete sentence
Etc.
John
Reply to
John Larkin
Jeez. Yer an idiot.
Reply to
Pieyed Piper
I should have figured that not a goddamned soul actually tried to answer the question.
It sounds like a 'soft-fuze'. That resets itself after tripping.
There is also a similar device used in hair dryer circuitry.
Reply to
Pieyed Piper
"DaveC" <
** Sounds like a Pico Fuse:
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Come in fast and very fast ratings with amps rated from 1A to about 15A.
When they blow, you need a soldering iron to replace them.
There are various Asians clones too.
..... Phil
Reply to
Phil Allison
"DaveC"
** Sure that is not the other way around ?
Pico Fuse would use " 7A LE " as a the marking for a 7 amp fuse.
.... Phil
Reply to
Phil Allison
I take it , that its blown and I also take it that its not charred (fusible R don't char or even discolour AFAIK) Desolder it and scrape an axial line along its length . Then DVM resistance check from either end. If a fusible resistor then maximum R read is what its value was near enough. FR breaks are usually to one end, normal R usually in the middle. Although green is often axial inductor.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on
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Reply to
N_Cook
No, I don't have one. I threw it out with the old battery. :-( Someone on-line volunteered to describe the one from his scope. I'll not ask him to do a post-mortem on a working fuse. ;-)
Thanks, Dave
Reply to
DaveC
Fuse. Ratings of these beasts in equipment is almost NEVER disclosed - like a company secret more precious than any other secret they have. Measure current draw and see what the maximum is during any operations, double that for a guide in choosing "first guess" replacement.
Reply to
Robert Baer
The axial leaded jobs I have seen in hair dryers are high current jobs with reed switches inside them. Not the soft break jobs.
The biggest soft device I recall was 3 Amps.
Reply to
Pieyed Piper
Could that be because no one knew what tghe question was?
Idiot
Reply to
Salmon Egg
And that's why markings are so important. You can circumvent any need to measure.
Reply to
Fester Bestertester
Fester Bestertester wrote in news: snipped-for-privacy@news.eternal-september.org:
Oh man, has science really come to this? >:)
Reply to
Lostgallifreyan
They are complete s
Just not ones that you
What I am writing, are incomplete sen
And don't
We don't like that on sci
Arf
Reply to
Arfa Daily
and several other fuse manufacturers list E as .375A. If you read the data sheets, you should be able to determine what family you need.
Reply to
Michael A. Terrell
unpublished.=20
Obviously, it's 10,000,000 amperes ;^)
Tim
--=20 Deep Friar: a very philosophical monk. Website:
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Reply to
Tim Williams
good one :)
Reply to
Jamie
They won't catch fire but I have seen them char slightly. It's also common for them to crack or blow out a small chip of ceramic if something shorts and exposes them directly to the line voltage.
Reply to
James Sweet

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